Water rushes through open bays on the Conowingo Dam on the Susquehanna River near Conowingo, Md., Friday, Sept. 9, 2011. Officials opened bays to alleviate pressure on the dam from the river, which is... more

Water rushes through open bays on the Conowingo Dam on the Susquehanna River near Conowingo, Md., Friday, Sept. 9, 2011. Officials opened bays to alleviate pressure on the dam from the river, which is swollen with rain from the remnants of Tropical Storm Lee. The water from those bays is threatening the downstream communities of Port Deposit and Havre de Grace. (AP Photo/Patrick Semansky) less